Chemical Storage - barium nitrate. My container of barium nitrate looks like it has water inside. Is there a way that I can separate the water from the barium nitrate?

Chemical Storage - barium nitrate. My container of barium nitrate looks like it has water inside. Is there a way that I can separate the water from the barium nitrate?
Barium nitrate solutions: Is a 0.1M solution of barium nitrate permissible for years 7-10 in NSW Department of Education Schools? It is not clear in the CSIS chemical search.
Precipitation reaction (sodium hydroxide and barium nitrate): I wonder if you can help me out with another confusing chemical reaction we have observed in our lab.